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Study Comparing a 13-valent Pneumococcal Conjugate Vaccine With 23-valent Pneumococcal Polysaccharide Vaccine in Adults

Pneumococcal Infections Clinical Trial

Official title:
A Phase 3, Randomized, Active-controlled, Modified Double-blind Trial Evaluating The Safety, Tolerability, And Immunogenicity Of A 13-valent Pneumococcal Conjugate Vaccine (13vpnc) Compared To A 23-valent Pneumococcal Polysaccharide Vaccine (23vps) In Adults 60 To 64 Years Old Who Are Naive To 23vps And The Safety, Tolerability, And Immunogenicity Of 13vpnc In Adults 18-59 Years Old Who Are Naïve To 23vps

Clinical Trial Summary

This study will assess the safety, tolerability and immune response of 13-valent pneumococcal conjugate vaccine (13vPnC) compared with 23-valent Pneumococcal Polysaccharide Vaccine (23vPS). Although the study started with only 1 population, amendments to the original protocol will now reflect three participant populations. Three age cohorts will be enrolled. The first cohort (age 60-64) will be blinded. Cohort 2 (age 50-59) and cohort 3 (age 18-49) are open label. Subjects in cohorts 1 and 2 will receive 2 vaccinations 3-4 years apart. Subjects in cohort 3 will receive 1 vaccination. All participants should be naïve of 23vPS. Comparisons of immune responses from the different cohorts will be done.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00427895
Study type Interventional
Source Pfizer
Contact
Status Completed
Phase Phase 3
Start date February 27, 2007
Completion date August 1, 2011
View Details
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